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HiYou need to partially strip the machine down, The cmos battery is situated under the keyboard and very easy to replace, you can remove this by the screws underneath the machine. Be carefull not to tear the keyboard ribbon.

If you go to the toshiba website im quite sure they will have some kind of diagram outlining this.Hope this helps

first to do is check your charger... remove the battery then connect the charger.. if still not working.. you need to open the system check the dc connector if its okay.. now time to check the motherboard. maybe some chips bluwn or burn... shortage... this is always happens epecially those over heating the cpu fan is slow not enougth to give out the coold..

if missplaced do a search if none for rsults goto any search engine and type in your exact model name and the words USERs GUIDE/MANUAL...............who needs one of those nemore.....well im not here to judge im here to help have fun and dont be afraid to ask for help i am but 1 of the many useful members